I live for the CABE

that 'crescent threading' is definitely different, lol. It reverts to conventional threading when you enlarge the photo.
The fork is superficially similar to that on my 'Inconnu', but the top of the crown is faceted on this 'titan' example. I’ll have a look at my steerer tube next time I clean and regrease the bearings, perhaps it too is a 'titan' tube..

I live for the CABE

The brake is a 'Vento', not original and only recently fitted to this unknown French bicycle, hence 'Inconnu'. Plain lugged machine, with double box lining, for 700B size wheels, circa 1910's in most peoples reckoning.

Wore out three sets of tires already!

that 'crescent threading' is definitely different, lol. It reverts to conventional threading when you enlarge the photo.
The fork is superficially similar to that on my 'Inconnu', but the top of the crown is faceted on this 'titan' example. I’ll have a look at my steerer tube next time I clean and regrease the bearings, perhaps it too is a 'titan' tube..View attachment 908907

Have never found much hard data on this manufacturer or their products.

From what have observed would guess their time of play to be "thirties to early sixties" but that is only a guess based upon smallish sample size... A fair number of makers in your land employed their bits during the immediate postwar years.

Siting was Belgium.

This is a case where a reading knowledge of Flemish/Dutch wouldst likely be of value. Have the impression firm Flemish rather than Francophone.